Global Patent Index - EP 1388865 A3

EP 1388865 A3 20040331 - Semiconductor memory device and control method therefor

Title (en)

Semiconductor memory device and control method therefor

Title (de)

Halbleiterspeicher und dessen Steuerungsverfahren

Title (fr)

Dispositif de mémoire à semiconducteurs et sa méthode de commande

Publication

EP 1388865 A3 20040331 (EN)

Application

EP 03016890 A 20030724

Priority

JP 2002231644 A 20020808

Abstract (en)

[origin: EP1388865A2] Disclosed is a semiconductor memory device which shortens an external access time when there is contention between an external access and an internal access. The semiconductor memory device includes an arbiter (13) which receives a first entry signal for entering a first access mode (external access) and a second entry signal for entering a second access mode (internal access) and determines priority of the first and second access modes in accordance with an order of receipt of the first and second entry signals. The arbiter (13) sequentially generates a first mode trigger signal corresponding to the first entry signal and a second mode trigger signal corresponding to the second entry signal in accordance with the determined priority. The arbiter (13) executes the first access mode by priority over the second access mode when the arbiter is supplied with the first entry signal with a predetermined period after the second access mode has been determined to have priority. <IMAGE>

IPC 1-7

G11C 11/406; G11C 29/00

IPC 8 full level

G01R 31/28 (2006.01); G01R 31/3183 (2006.01); G01R 31/3185 (2006.01); G11C 11/403 (2006.01); G11C 11/406 (2006.01); G11C 29/08 (2006.01); G11C 29/50 (2006.01)

CPC (source: EP KR US)

G11C 11/406 (2013.01 - EP KR US); G11C 11/40603 (2013.01 - EP US); G11C 29/50 (2013.01 - EP US); G11C 29/50012 (2013.01 - EP US); G11C 29/50016 (2013.01 - EP US); G11C 11/401 (2013.01 - EP US)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1388865 A2 20040211; EP 1388865 A3 20040331; EP 1388865 B1 20130828; CN 100346422 C 20071031; CN 100555447 C 20091028; CN 101051525 A 20071010; CN 101051525 B 20120704; CN 101055761 A 20071017; CN 101055761 B 20120620; CN 101055762 A 20071017; CN 1480949 A 20040310; JP 2004071097 A 20040304; JP 4188640 B2 20081126; KR 100919270 B1 20090930; KR 20040014274 A 20040214; TW 200403685 A 20040301; TW I223279 B 20041101; US 2004027882 A1 20040212; US 7287142 B2 20071023

DOCDB simple family (application)

EP 03016890 A 20030724; CN 03149659 A 20030805; CN 200710106806 A 20030805; CN 200710106807 A 20030805; CN 200710106808 A 20030805; JP 2002231644 A 20020808; KR 20030054009 A 20030805; TW 92120220 A 20030724; US 63475803 A 20030806